toyota Tacoma - bully Dog Wathcdog - Photo 28092283

The Bully Dog Watchdog works on all '96-and-later vehicles with an OBD-II port. It is a digital gauge/monitor that monitors over 20 vehicle parameters once calibrated to your vehicle. It will send you valuable fuel economy driving tips to help you save your pennies where and when you can. A few of the functions include; instant fuel economy, average fuel economy, waster energy, boost pressure, speed, coolant temp, timing position in degrees, throttle position in percent, air intake temperature, barometer, battery voltage and more.